For live matches in the stadium I always go until the semi final. The QF has 4 courts to choose while the SF has two. The final, I watch at home.
If the Olympic and World Champion is going to continue participating in future tournaments with this kind of form, may as well call it a day. Quite similar to TH during is final years before retirement.
at this stage, as long as they're able to make it into the last four, there should not be much complaint however i prefer to postpone my judgement until the coming WC for a more sounding conclusion a major tourney will provide clearer and more complete landscape pictures...
If this were a boxing match, the referee (umpire here) would have stop the match. Oh no...spare me this pain.
LOL, Cai/Fu should call it a day. They accomplish everything pretty much, might as well as retired as a champion, rather than retired as a loser.